Journal Bearings in Turbomachinery

1. Front Matter

   Pages i-xi

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2. Theory and Practice

   1. Front Matter

      Pages 1-1

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   2. Bearing Development and Bearing Theory

      • D. M. Smith

      Pages 3-5

   3. Current Practice in Journal Bearings

      • D. M. Smith

      Pages 6-16

3. Performance in Steady Running

   1. Front Matter

      Pages 17-17

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   2. Functioning of Journal Bearings

      • D. M. Smith

      Pages 19-21

   3. Conventional Hydrodynamic Theory of Laminar Flow

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      Pages 22-41

   4. Similarity Rules, Flow Regimes, and Characteristic Relations

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      Pages 42-55

   5. Observed Bearing Performance

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      Pages 56-68

   6. Approximate Assessment of Performance

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      Pages 69-73

4. Dynamic Characteristics

   1. Front Matter

      Pages 75-75

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   2. Journal Bearings in Vibration

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      Pages 77-83

   3. Conventional Theory of Linearized Dynamic Characteristics with Laminar Flow

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      Pages 84-108

   4. Effects of Inertia of Oil on Dynamic Characteristics

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      Pages 109-115

   5. Experimental Investigation of Dynamic Characteristics

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      Pages 116-120

   6. Influence of Bearings in Turbomachinery Vibration

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      Pages 121-129

5. Operational Experience and Prospective Development

   1. Front Matter

      Pages 131-131

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   2. Operation of Journal Bearings in Turbomachinery

      • D. M. Smith

      Pages 133-139

   3. Prospects in Development of Journal Bearings

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      Pages 140-149

6. Back Matter

   Pages 151-176

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This book deals with the functioning of hydrodynamic journal bearings in turbomachinery. It makes particular reference to large turbine­ generator and marine propulsion plant. Journal-bearing design in this field has been based mainly on experience supplemented by full-scale experimental test. Development is becoming influenced to an increasing extent by research and analysis. Particular attention is given in this book to correlation of research and analytical work with the observed operating characteristics of journal bearings. The physical phenomena in bearings are complicated, and analysis is rendered convenient only by making simplifying assumptions. The engineer must know which assumptions are serviceable and in what operating conditions they may be applied. Current British and European practice in journal bearings is illus­ trated. An examination is made of steady running characteristics, as predicted by theory and as established by test. Some account is given of the dynamic characteristics of journal bearings and of their in­ fluence in machine vibration. Service experience of journal bearings is reviewed, and reference is made to possible future trends in develop­ ment. The book is the outcome of work on turbine plant with Metropolitan­ Vickers and its successor Associated Electrical Industries. The A.E.!. and English Electric activities in this field have recently been incor­ porated in English Electric-A.E.!. Turbine-Generators Ltd. The author expresses his gratitude to the Company for permission to publish the results. He thanks the English Electric Co. Ltd., C. A.

• Europe
• correlation
• design
• development
• engine
• future
• machine
• propulsion
• research
• service
• turbomachinery
• vibration

• Turbine-Generator Division, Associated Electrical Industries Ltd., Europe

  D. M. Smith

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